How can I improve my son's coordination?

My three and a half year old son has minor co-ordination problems.

He has always been very clumsy and lacks concentration.

After moaning a lot at professionals he went for a few tests.

He has now been referred to occupational therapy, but it could be a while until his first appointment.

No-one seems to have any ideas how I can help him at home. Eg learning by playing games etc. Do you have any ideas?